This page provides a link to the Excel spreadsheet that compares the
lists of bird species documented for each South American country and territory.
Note that these lists may not be the official national lists because criteria
for inclusion on those lists may vary from SACC criteria -- see below:

Geographic boundaries

They do not include areas outside the South American
Classification Committee's official boundaries.
For example, Easter Island is a Chilean territory and Isla San Andrés is a
Colombian territory, yet neither area is within the SACC area; thus, species
found only there are not included in the lists given for those countries.
Offshore boundaries extend 200 nautical miles from coastlines, including
islands, within the SACC area.

Criteria for inclusion

Criteria for inclusion are the same as for the SACC list as
a whole. Only those species documented by tangible, independently verifiable
evidence are included on each list. Such evidence may consist of a specimen, a
photograph or video, or an audio-recording, as long as the evidence is archived
in an institutional collection, and its existence is published. Therefore,
unpublished records of any kind do not constitute acceptable evidence; further,
evidence that is privately held also does not constitute acceptable evidence;
and finally, sight records are not considered acceptable evidence, published or
not.Records documented only on web
sites are not considered published because web sites are ephemeral.

Status

Each species is accorded a status code that conforms to
SACC status codes for the main SACC list:

X = species known or assumed to breed in the country or
territory [and X(e) = endemic; a species is
considered endemic to a country until a record from outside its boundaries
supported by tangible evidence is published].

NB = species that occur regularly but only during their
nonbreeding season.

V = species that occur only as vagrants and are not part of
the area's core avifauna.

IN = species introduced by humans (or have colonized from
introduced populations elsewhere) and have established, self-sustaining
breeding populations.

EX = species that are extinct or extirpated from the region
are marked [and EX(e) = endemic].

Also:

H = hypothetical (sight-only records, specimens of dubious
origin); not counted in total number of species recorded for the country.Published reports that have been officially
excluded from a country’s list by that country’s formal list committee are not
included.

Taxonomy

The list uses the most recent SACC classification
and is updated whenever the overall classification is changed.
This allows comparisons among countries and territories using the same
species-level taxonomy.

List Coordinators

Each country or territory has one or more individuals
responsible for determining each initial list and for updating the list with
new distributional information and, with help from SACC, changes in species
limits. Dates indicate when the most recent version of the list was compiled.

[Compiler names]. [year of most recent update]. Species
lists of birds for South American countries and territories: [country].
[Version Day/Month/Year]. http://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm